Cooler



FIG. 1 is a front and top perspective view of a cooler showing the new design;

FIG. 2 is a back and top perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a right side view thereof, the left side being a mirror image of the right side. 

CLAIM The ornamental design for a cooler, as shown and described. 